Shedding light on dark DNA Most textbook definitions of evolution state that it occurs in two stages: mutation followed by natural selection. DNA mutation is a common and continuous process, and occurs completely at random.
The average adult only eats 15 grams of fiber per day. Women need 25 grams of fiber per day, and men need 38 grams per day, according to the Institute of Medicine.
The National Fiber Council recommends an average of 32 grams of fiber per day for a healthy body. To calculate how much fiber you need based on your age and gender, and receive a customized meal plan just for you, click on the fiber calculator below. Tip: Remember to increase your fiber intake gradually.Consuming too much, too soon, can cause a bloated feeling and minor abdominal cramps.o calculate how much fiber you need based on your age and gender, and receive a customized meal plan just for you, click on the fiber calculator below. Tip: Remember to increase your fiber intake gradually.